Inorganic Acids & Bases
REACH
Phosphorus pentasulfide
CAS Number
1314-80-3
EC Number
215-242-4
What is Phosphorus pentasulfide?
Phosphorus pentasulfide (CAS 1314-80-3), also known as P4S10 and phosphorus persulfide, is a reactive inorganic compound used primarily as a chemical intermediate in the synthesis of organosulfur compounds.
Where is Phosphorus pentasulfide used?
- Agrochemicals: manufacture of dithiophosphate-based pesticides and insecticides
- Lubricants and metalworking fluids: precursor to zinc dialkyldithiophosphate (ZDDP) and related antiwear and extreme-pressure additives
- Mining and flotation: dithiophosphate collectors for selective mineral separation in sulfide ore processing
- Specialty organic synthesis: catalyst or reagent in pharmaceuticals and flame retardants
- It introduces both phosphorus and sulfur into organic molecules.
Good to know: Packaged under inert atmosphere due to high moisture sensitivity and reactive nature.
Commercial specifications
- Purity specifications commonly 98% to 100% P4S10 content
- Bulk supply in drums or IBCs
Other Names (Synonyms)
sulfur phosphide|phosphorus persulfide|P4S10|phosphorus sulfide|Tetraphosphorus decasulfide|Phosphoric sulfide|Diphosphorus pentasulfide|Thiophosphoric anhydride
What are the physical properties of Phosphorus pentasulfide?
Melting Point 286-290 °C
Boiling Point 513-515 °C
Density 2.062 g/cm³
Appearance Phosphorus pentasulfide is a greenish-gray to yellow, crystalline solid with an odor of rotten eggs. The Odor Threshold is 0.005 ppm
Color Yellow to green
Odor rotten egg odor
Form Powder
Water Solubility reacts
pH 1 (10g/l, H2O, 20℃)
How is Phosphorus pentasulfide classified and handled safely? Learn More
Danger
GHS02· Flammable GHS07· Irritant GHS09· Environmental Hazard GHS05· Corrosive GHS06· Toxic GHS08· Health Hazard
Hazard Statements
H228 Flammable solid
H260 In contact with water releases flammable gases which may ignite spontaneously
H261 In contact with water releases flammable gas
H301 Toxic if swallowed
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P223 Do not allow contact with water.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.
Which trade and regulatory codes apply to Phosphorus pentasulfide?
HS Code 28139000
UN Number 1340
ADR Class 4.3
Packing Group II
Storage Class 4.3 - Hazardous materials, which set free flammable gases upon contact with water
WGK (Germany) 3